1912173123 has 8 divisors (see below), whose sum is σ = 2913787648. Its totient is φ = 1092670344.

The previous prime is 1912173119. The next prime is 1912173163. The reversal of 1912173123 is 3213712191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1912173123 - 2² = 1912173119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1912173163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45527911 + ... + 45527952.

It is an arithmetic number, because the mean of its divisors is an integer number (364223456).

Almost surely, 2^1912173123 is an apocalyptic number.

1912173123 is a deficient number, since it is larger than the sum of its proper divisors (1001614525).

1912173123 is an equidigital number, since it uses as much as digits as its factorization.

1912173123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91055873.

The product of its digits is 2268, while the sum is 30.

The square root of 1912173123 is about 43728.4017887688. The cubic root of 1912173123 is about 1241.2018184653.

The spelling of 1912173123 in words is "one billion, nine hundred twelve million, one hundred seventy-three thousand, one hundred twenty-three".